The Environmental Working Group is a popular site for research into ingredients and skin care products. They maintain a database called Skin Deep that ranks products and ingredients with a health score. 0 is safest...

We've had many people ask us about the Environmental Working Group. We strongly support and commend the Environmental Working Group on their efforts to create awareness around skin care ingredients and lobby for change. We believe this effort is much needed here in the US to help women and men become more aware of what ingredients are going into their bodies....